With more than sixty years of experience in valve manufacture, Azbil (Yamatake) has installed 700,000 control valves world-wide. It also developed the world’s first valve positioner equipped with a microprocessor. Offering fully automatic set-up, this “smart” positioner has been very successful; to date over 200,000 units have been sold. Moreover, drawing on extensive on-site experience, Azbil developed a Field-bus valve positioner with self-diagnostic capabilities. This enables safer, more stable operations, minimizes maintenance costs, and maximizes the working life of the valve.